Improvement in the manner of forming oblique catches, protuberances



'NITED STATES PATENT OFFICE.

JORDAN L. MOTT, OF NEW YORK, N. Y.

` IMPROVEMENT IN THE MANNER OF-FORMING OBLIQUE CATCHES, PROTUBERANCES,AND DOVETAILED FASTENINGS ON PLATES AND OTHER PIECES 0F CAST-IRON, &c.

Specification forming part of Letters Patent No. 1,872, dated December1, 1840.

To @ZZ whom, it may concerns Be it known that I, JORDAN L. Mori?, of thecity of New York, in the State or" New York, have invented animprovement in the manner of forming dovetailed or oblique catches orprojections on plates or other pieces cast from iron or other met-al,said catches or projections being such as are required and used forholding latches, the retaining of stovei`eet, dovetailed wedges onrailroad-chairs, and for a variety of purposes similar in character andwell known to founders; and I do hereby declare that the following is afull and exact description thereof.

The ordinary modes of forming projections for the catches to latch or toretain in place the doors or other parts of stoves, and of forming thedovetailed grooves for receiving and retaining` the legs of stoves andof producing projections on cast articles for numerous other purposes,havev been by the use of sand cores or of movable pieces on the pattern,which pieces are taken from the mold after the re'- moval of the mainplate or piece of casting. Instead of employing these or similardevices, Iinake holes through the pattern in the part where suchprojections are to be formed, or through a plate or piece of metal or ofwood, which may be laid upon the proper part of the mold after the mainpattern has been removed, and through these holes I force a punch orpiece adapted thereto which is to be so formed as to make an impressionin the sand of the exact form required, by which means said impressionwill be produced with much greater facility and truth than by any of themethods heretofore used or known.

In the accompanying drawings, Figure 1 represents a piece of wood ormetal by which the impression is to be made in the sand,andFig.

v2. the plate or portion of apatternV having holes through it adapted tothe impression to be inade.

A, Fig. 1, is the handle part of theppunch or piece which is to make theimpression,and

ffthe portion which is to enter the holes prepared therefor in thepattern or plate.

In Fig. 2, e e represent such holes, and ccthe catches or projections,which may be formed on a plate by the part f, Fig. 1. By reversing thetwo inner projections, cc,they would, in conjunction with the two outerones, constitute a dovetailed opening, which would reamong founders toform depressions in the sand by pricking through holes made in thepatterns for that purpose, so as to produce pins or shanks on thecasting to be obtained, and I do not, therefore, claim the so doing asof my'invention; but it has never been attempted, as I verily believe,to form catches, dovetailed openings, and other devices of a likecharacter by means of an apparatus Such as I have described.

What I claim, therefore, as constituting myv invention, and desire tosecure by Letters Patent, is-

The manner herein described of forming such catches and projections bymeans of a punch or piece properly formed for the purpose, there beingcorresponding openings through the pattern or through a plate adaptedthereto, as herein fully set forth.

JORDAN L. MOTT.

Witnesses:

Trios. P. JoNns, Roer. T. BUNKER..

